3 papers
cond-mat.str-el2025
Surface Structure and Surface State of a Tight-Binding Model on a Diamond Lattice
Katsunori Kubo
Surface states of a tight-binding model with nearest-neighbor hopping on a diamond lattice of finite thickness are investigated. We consider systems with (001), (110), and (111) su…
cond-mat.str-el2024
Flat Surface State with Octupole Moment in an Orbital System on a Simple Cubic Lattice
Katsunori Kubo
A tight-binding model for orbitals on a simple cubic lattice with finite thickness is investigated. The hopping integrals for nearest-neighboring sites are considered. We exa…
cond-mat.str-el2024
Octupolar edge state in an orbital system on a square lattice
Katsunori Kubo
A tight-binding model for orbitals on a square lattice is investigated. We consider only the nearest-neighbor hopping and the model is characterized by two hopping parameters…